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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Oz Reviewly Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above for today’s minimum. Perth’s cold minimum temperature typically falls between 5°C and 10°C in winter, but can drop below 0°C on clear, calm mornings inland.
What is the average cold minimum temperature in Perth during winter?
Perth’s average minimum temperature in winter (June to August) is about 8°C at the city centre. Suburbs further inland, such as Armadale or Midland, often record minima 2–3°C cooler due to radiational cooling. Coastal areas like Fremantle stay milder, rarely falling below 10°C.
How low can Perth’s minimum temperature go?
The coldest day in Perth ever was 0.6°C, recorded at the Perth Metro station on 17 June 2006. The lowest temperature in Perth in winter can dip to around 1–2°C in the city, but frost is common in outer suburbs. For the coldest day in Perth 2025, check the Bureau’s daily summaries; recent winters have seen minima near 2°C.
What was the coldest day in Perth 2026 so far?
As of early 2026, the coldest minimum recorded at Perth Metro was around 3.2°C in late June. Check the live forecast above for the most current data and any frost warnings.
Is the coldest day in Perth today likely to be below 5°C?
If the live forecast above shows a minimum below 5°C, yes. Clear skies and light winds overnight increase the chance of a cold morning. Coastal suburbs are usually 2–3°C warmer than inland areas.
What causes Perth’s cold minimum temperatures?
Cold minima occur when high pressure brings clear skies and calm winds, allowing heat to radiate from the ground. Inland suburbs cool fastest. The coldest day in Perth ever (0.6°C) happened under such conditions in June 2006.
For more details on Perth’s climate, visit our Perth Weather page or check the Australia weather hub for statewide forecasts. See also Adelaide Weather for comparison with another southern city.